Cisco 1721 ADSL + VPN + ISDN failover - help 1

[Scowla]

We have 2 Cisco 1721 routers and need to setup a site to site VPN link over ADSL with ISDN failover. We are having extreme difficulty in finding a sample script and would like to know if anyone has been able to do this successfully. Even a script for an ADSL VPN site to site to get me going then I can look at ISDN failover at later date. Any help will be greatly appreciated.

Thanks in advance,

Howla

 

[flojr13]

Wow, ok you have a lot of work ahead of you. I personally haven't configured a 1700 series with ADSL interfaces, but it isn't much different than other configs. You'll need to configure the routers in the following steps:

1. Ensure that the ADSL interfaces are configured and communicating.

http://www.cisco.com/pcgi-bin/Support/browse/psp_view.pl?p=Hardware:1700&s=Software_Configuration

2. Once you have that, configure your VPN tunnel using IPSEC. See this link, and look under the IPSEC Router to Router section.

http://www.cisco.com/pcgi-bin/Suppo...king:IPSec&s=Implementation_and_Configuration

3. Finally, configure your ISDN as a dial backup to your ADSL interfaces. You'll most likely have to use some routing tricks to failover routes to the ISDN (like floating static routes). Since your ISDN is a direct connection between sites, you won't need to encrypt that traffic.

http://www.cisco.com/pcgi-bin/Suppo...rking:ISDN&s=Implementation_and_Configuration

Hope this helps!
-Flo